Affects widely-used SAP NetWeaver ABAP/Platform; tampering signed XML enables unauthorized access and disruption; critical enterprise software.
CVE-2026-23687
Authenticated attacker can alter signed XML in SAP NetWeaver to bypass identity checks.
Is CVE-2026-23687 being exploited?
Not confirmed. CVE-2026-23687 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.48% probability of exploitation in the next 30 days.
How severe is CVE-2026-23687?
CVE-2026-23687 is rated High with a CVSS score of 8.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-23687?
Yes. A fix has been recorded for CVE-2026-23687. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-23687 affect?
CVE-2026-23687 affects SAP NetWeaver Application Server ABAP, SAP NetWeaver ABAP Platform. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-23687?
Patch when available; enable signature validation and monitor for tampering.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Tampered signed XML could enable unauthorized data access and disruption of SAP NetWeaver services.
Immediate action required
- affectedSAP_BASIS 700
- affectedSAP_BASIS 701
- affectedSAP_BASIS 702
- affectedSAP_BASIS 731
- affectedSAP_BASIS 740
- affectedSAP_BASIS 750
- affectedSAP_BASIS 751
- affectedSAP_BASIS 752
- affectedSAP_BASIS 753
- affectedSAP_BASIS 754
- affectedSAP_BASIS 755
- affectedSAP_BASIS 756
- affectedSAP_BASIS 757
- affectedSAP_BASIS 758
- affectedSAP_BASIS 804
- affectedSAP_BASIS 816
- affectedSAP_BASIS 916
- affectedSAP_BASIS 917
- affectedSAP_BASIS 918
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.